Functions:

• Monitor outside
• Lock released
• Emergency button
• Talking with outdoor station

Specifications:

• Power supply: transformer, 18V DC
• Screen: 4 inches B/W (crt), 4 inches TFT
• Resolution: 480TVL
• Ring: 3 to 10 chimes
• Image last: conversation 120 seconds, monitor 30 seconds
• Power consumption: 15/500mA
• Size: 250 x 140 x 22mm
• Connection: 4 cables, polarity
• Working temperature: -10 to +55°C
• Installation: surface mounted